ICS952302

Integrated Circuit Systems, Inc. ICS952302 Frequency Generator for Transmeta Efficeon Recommended Application: Transmeta Efficion, ATi M6 Output Features: 3 - CPUs @ 3.3V including 1 free running CPUCLK_F 7 - PCI @ 3.3V, including 4 free running PCICLK_F 1 - 27MHz clock @ 3.3V 2 - 48MHz clocks @ 3.3V 2 - REF clocks @3.3V Key Specifications: CPU output jitter: < 250ps PCI output skew: < 250ps CPUT - PCI output skew: 1-3ns 27MHz Accuracy < 50ppm 48MHz Accuracy < 50ppm TM TM Features: Support I2C Index read/write and block read/write operations. Uses external 14.318MHz referience input or XTAL. Full Load Power consumption reduced >10% compared to reference device Power management via SMBus Functionality Byte 4b7 0 0 0 0 1 1 1 1 Byte 4b6 0 0 1 1 0 0 1 1 Byte 4b5 0 1 0 1 0 1 0 1 Spread % Pin Configuration VDDREF 1 REF0 2 GNDREF 3 X1 4 PCICLK1 11 PCICLK_F2 12 PCICLK_F3 13 VDDPCI 14 PCICLK2 15 GNDPCI 16 N/C 17 N/C 18 VDDCOR 19 PCI_STOP# 20 **PD# 21 GND48 22 SDATA 23 SCLK 24 ICS952302 +/-0.3 +/-0.6 +/-0.25 +/-0.45 -0.60% -1.20% -0.50% -0.90% CENTER X2 5 VDDPCI 6 PCICLK_F0 7 PCICLK_F1 8 GNDPCI 9 PCICLK0 10 DOWN 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 REF1 VDDCPU N/C CPUCLK0 GNDCPU CPUCLK1 CPUCLK_F CPU_STOP# GND N/C OE* N/C VDD N/C VDD27 GND 27MHZ N/C N/C N/C GND48 VDD48 48MHZ_1 48MHZ_0 48-TSSOP * Internal Pull-Up Resistor **No Diode Clamp to VDD 0957B—10/05/04 ICS952302 Pin Descriptions PIN # 1 2 3 4 5 6 7 ...